Multiple choice Which of the following statements is false? Each chloroplast is surrounded by a double membrane envelop. Chlorenchyma cells of leaves contain 20-40 chloroplasts. In many algae, chloroplast is the largest cell organelle. Chloroplasts were discovered by Briedenbach in 1883. Chromoplasts have various shapes due to the crystallisation of carotenoids. Reveal answer Fill a bubble to check yourself D Correct answer Explanation False. Chloroplasts were not discovered by Briedenbach in 1883. It is discovered by Schimper in 1883. So, this option is right.